NELSON%VWSCYG@vmsc.oac.uci.edu (Matthew A. Nelson) (12/18/90)
Hello, all. I just encountered some weirdness in the equation library card's periodic table. I needed to know the heat of vaporization for liquid nitrogen. "Ah ha," me thinks, "that's in the 48's periodic table." When I looked it up, it gave me a value of 2.7928 kJ/mol. Great. The only problem was that when I compared the results of my calculations to those my boss worked out, I was exactly a factor of 2 off. It turns out that when the equation library gives 2.8 kJ/mol, it is talking about per mole of N, not per mole of N2. For cryin' out loud, who has ever heard of LN1 ?! When I finally figured this out, I went digging in the manual, and found no mention of this rather odd way to present physical properties. I guess that I can assume that this 'atomic standard' is the usual for the equation library. Just thought that I'd pass the info along... -matt